And george sniffin



(No Model.) Q

. J. OGONNELL & G. SNIFFIN.

LIMBKILN. No. "521,295..- Patented June 12, 1894.

WITNESSES: N VE N TOHS T T fi I la W6 ATTORNEYS.

TNE NATIONAL LITNOGRAPHING COMPANY,

was! NGTQ'M n. c.

JAMES OCQNNELL, on NEW YORK, AND GEORGE SNIFFIN, on Too NEW YORK.

LllVlEKlLN.

SPECIFICATION forming part of Letters Patent No. 521,295, dated June 12,1894.

provement in Limekilns, of which the followordinarily by doors 10, asillustrated in Figs.

ing is a full, clear, and exact description.

" Our invention relates to an improvement in lime kilns, and it has forits object to provide a means whereby the boiler usually employed forgenerating steam to supply the burners within the kiln may be locatedwithin the arch of the kiln, or whereby a boiler may be located withineach arch of the kiln if it is desired, the boiler being so constructedthat a damper may be used in connection with it to regulate the quantityof heat supplied to the boiler.

Another feature of the invention is to provide a means whereby when theouter openings of the arches are closed, air may be supplied in properquantities to the burners.

The invention consistsin the novel construction and combination of theseveralparts, as will be hereinafter fully set forth and pointed out inthe claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures and letters of referenceindicate corresponding parts in all the views.

Figure l is a partial horizontal section through the lime kiln,illustrating the im-.

in which the rock to be burned is located.

Each of the arches is closed at its outer end 1 and 3, two doors beingusually employed at each arch. A boiler G, is located in one or in eachof the arches of the kiln, the front of Application filed May 9, 1893.Serial No. 473,591- (No model.)

the boiler being quite close to the mouth or outer end of the arch inwhich it is located.

The boiler may be of any approved pattern, but usually and preferably itis of a circular type, comprising an inner shell 12 and an outer shell13, the shells being so located and connected as to form a circularwater space 14 and an inner chamber 15, which extends through from frontto rear of the boiler. The inner chamberv 15, is open at its inner end,and at its outer end is closed preferably by means of doors 16, asillustrated in Fig. 2. A steam dome 17, is erected upon the top of theboiler, communicating with the water space 14, and a recess 18, is madein the arch in which the boiler is located to receive the dome. Therecess in which the dome is 10- KAHOE,

cated is closed by an outer plate 19, or in any other approved manner.In Fig. 2 this plate is omitted as is likewise the outer door 10. Theboiler may be supported in the dome of the arch in any approved manner;in the drawings it is illustrated as resting upon a series of beams 20,and immediately beneath each beam, and likewise beneath the bottom planeof each arch, even if the boiler is not placed therein, an air supplyduct21, is formed in the kiln, which communicates with the arch beneathwhich it is placed at a point adjacent to where the burner D, islocated. The burner is located beyond the inner end of the boiler, andin order that the heat supplied to the boiler for the purpose ofgenerating steam may be effectually regulated, a damper or disk whichserves as a heat-fender 22, is located in the central chamber 15 of theboiler, as shown in Fig. 3, which chamber is ordinarily supported by aneasel-like structure 23. The damper'is loosely fitted to the innercontour of the chamber 15, and ispivoted upon its support 23. Thus thedamper may be inclined to any desired extent or it may be moved to anypoint in the length of the chamber by drawing the support 23forward,

or carrying or pushing it inward. By this means it is evident that theheat generated for burning the lime-stone is utilized for generatingsteam in the boiler or boilers employed. In the event that there is noheat from the burners, or not sufficient to gener- I00 ate steamproperly, as for example when the burning is first started, a fire maybe made within the chamber 15. It islikewise evident that the boiler orboilers may be utilized to supply steam to any desired point or for anypurpose. Primarily, however, the boiler is used to generate steam tosupply to the burn er D, which burner burns commingled oil and steam orvapor, two pipes, one within the other, being led to the burner throughthe outer doors of the arches and likewise through the doors of theboiler, one of the pipes being connected with the oil supply, and theother pipe being connected with the steam dome of the boiler. By thisarrangement a separate boiler independent of the kiln is not needed, andeconomy of fuel is obtained, since the heat in the kiln is utilized togenerate the steam. I desire it to be understood that the outer end ofthe air duct 21, is preferably provlded with a door 24, which door maycontain draft openings if in practice it is found desirable.

We desire it to be understood that the boilers may be removed readily,and the kiln restored to the ordinary condition, and that Wood may beburned in the kiln while the boilers are in position; and it may here beremarked that more lime can be made, in a kiln when the boilers areplaced in it as has been above described, than it is possible to make inthe old form of kiln, as the draft can be created through the center ofthe kiln by the steam from the boiler.

Having thus described our invention, we

claim as new and desire to secure by Letters Patent- 1. The combination,with a kiln and its arches, of a boiler permanently located within anarch of the kiln, and having a chamber, a damper located in saidchamber, for regulating the supply of heat from the kiln to the boiler,as and for the purpose specified.

2. The combination, with a lime-kiln arch, of a boiler having a chamberwhose inner end is open and communicates with the inner end of the arch,and a damper, or heat-fender, located in said chamber and adapted foradjustment for regulating the application of heat to the boiler,substantially as shown and described.

3. The combination, with a kiln and its arches, of a boiler locatedtherein, the body of the boiler comprising a water jacket and an innerchamber extending through from front to rear of the boiler, and open atits inner end, a damper, or heat-fender located within the said boilerchamber,and an air duct located beneath the boiler, in communicationwith the outside atmosphere and with the arch back of the boiler,substantially as sh own and described, whereby the heat of the kiln isregulated and utilized for generating steam for supplying the burners orfor other purposes, as and for the purpose set forth.

J AMES OOONNELL. GEORGE SNIFFIN. \Vitnesses:

JOHN NUGENT, PAT CAVANAUGH.

